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Questions and Answers
What is an earthquake?
What is an earthquake?
- A measure of the intensity of an earthquake
- The earth-shaking that is produced by the release of energy rapidly and in seismic waves (correct)
- The sudden movement along faults and plate boundaries
- A type of volcanic eruption
What is the primary purpose of the Richter scale?
What is the primary purpose of the Richter scale?
- To predict the location of an earthquake
- To measure the intensity of an earthquake (correct)
- To measure the duration of an earthquake
- To identify the type of earthquake
What causes a volcanic earthquake?
What causes a volcanic earthquake?
- The collapse of underground caverns and mines
- The detonation of a nuclear or chemical device
- The sudden movement along faults and plate boundaries
- The movement of magma beneath the surface of the Earth (correct)
What is a collapse earthquake?
What is a collapse earthquake?
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What is an explosion earthquake?
What is an explosion earthquake?
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Study Notes
Earthquake Definition
- An earthquake is the shaking of the earth produced by the rapid release of energy in seismic waves.
Measuring Earthquakes
- Scientists use the Richter scale, developed in 1930 by seismologists Richter and Gutenberg, to measure earthquakes.
- Earthquakes are evaluated based on their duration and intensity because no two earthquakes are alike.
Types of Earthquakes
- There are four main types of earthquakes: tectonic, volcanic, collapse, and explosion.
Tectonic Earthquakes
- Produced by sudden movement along faults and plate boundaries.
Volcanic Earthquakes
- Caused by the movement of magma beneath the Earth's surface.
Collapse Earthquakes
- Produced by the explosion of rock on the surface.
- Can occur in underground caverns and mines, causing small earthquakes.
Explosion Earthquakes
- Result from the detonation of a nuclear or chemical device.
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